A damaged chemical tank in Southern California has developed a crack, potentially reducing the risk of a catastrophic explosion. However, evacuation orders remain in place for approximately 50,000 residents, with no clear timeline for their return, according to fire officials on Sunday.
Orange County Fire Authority Captain Wayhowe Huang reported that firefighters were able to closely evaluate the tank overnight, confirming that it had cracked. By Sunday morning, Huang noted that there had been no apparent leakage of the highly volatile chemicals contained within the tank. Nonetheless, he warned that there is still a risk of explosion.
In an effort to cool the chemicals inside the tank and prevent an explosion, firefighters have been spraying water on it. The temperature inside the tank reached 100 degrees Fahrenheit (37.7 degrees Celsius) on Sunday, an increase of 10 degrees Fahrenheit (5.5 degrees Celsius) since Saturday, as stated by Democratic state Senator Tom Umberg.
Democratic Governor Gavin Newsom declared a state of emergency on Saturday and reported via X that he had requested an emergency declaration from President Donald Trump to enhance federal support for local and state officials dealing with the crisis.
The pressurized tank overheated on Thursday, leading to the venting of vapors at a company site in Garden Grove, approximately 40 miles (60 kilometers) south of downtown Los Angeles, as per the Fire Authority. Thankfully, there have been no reported injuries, and air quality tests indicate normal pollution levels in the evacuation zone. Environmental officials at both state and federal levels have deployed specialized equipment to ensure no gas escapes from the compromised tank.
A crack in the tank could be seen as a beneficial development, as it might indicate that the product or pressure inside is being released, thereby mitigating the possibility of an explosion. Andrew Whelton, an engineering professor at Purdue University, likened this situation to a soda can left in a hot car: while it may explode if sealed, creating a hole relieves pressure and prevents an explosion.
Adding to this perspective, Elias Picazo, a chemistry professor at the University of Southern California, mentioned that a strategic leak could buy additional time for the liquid inside to solidify. He noted that if managed correctly, it could allow for the controlled release of any unreacted liquid from the tank.
Despite these benefits, Faisal Khan, head of the chemical engineering department at Texas A&M University, cautioned that the crack still poses a risk of explosion, albeit potentially less severe than initially anticipated. He emphasized that even with cooling efforts, reactions within the tank may still be occurring, maintaining a risk for explosive release.
Several shelters have been established for evacuees. On Sunday, the parking lot of an evacuation center at a high school in La Palma was filled. Families, including one with seven members and nine cats, utilized makeshift arrangements of carriers to keep their pets comfortable as they awaited further information.
Meanwhile, a class-action lawsuit was filed by some Garden Grove residents against GKN Aerospace Transparency Systems, the facility's operator, claiming that property values in the area would be adversely affected regardless of the outcome of the incident. GKN did not comment on the lawsuit but released statements apologizing to those forced to evacuate and confirming that they were working diligently to mitigate risks associated with the leak.
Officials disclosed that the valves on the tank were either broken or "gummed up," hindering crews from removing the chemical or relieving pressure. The primary goal remains to cool the chemical to reduce the likelihood of an explosion, with Whelton suggesting that a leak might actually be less harmful than an explosion that spreads the chemical over a larger area.
Monitoring efforts include drones that check for temperature spikes every ten minutes, and containment barriers have been erected to prevent any chemical spills from reaching storm drains or local bodies of water. GKN Aerospace holds between 6,000 to 7,000 gallons (22,700 to 26,500 liters) of methyl methacrylate in the tank, used for producing plastic parts. Exposure to this chemical can cause various health issues, including respiratory problems and skin irritation.
Overall, the situation is being closely monitored, and local officials are preparing contingency plans to manage potential scenarios, including how wind patterns might affect any chemical plume in the event of a catastrophic failure. Efforts are also being made to ensure that the surrounding communities are kept informed as the situation unfolds.
